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Microchip Technology MDA3KP15A
- Part No.:
- MDA3KP15A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MDA3KP15A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:6,401
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Product details
Overview
MDA3KP15A from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array with 15 V standoff voltage (VWM), 16.7–18.5 V breakdown voltage (V(BR)), and 24.4 V maximum clamping voltage (VC) at 123 A peak pulse current (IPP). It provides secondary lightning protection per IEC61000-4-5 (42 Ω, Class 1–4), ESD/EFT suppression per IEC61000-4-2/4-4, and inductive switching transient protection in power supply input stages.
For engineers reviewing the MDA3KP15A datasheet, MDA3KP15A pinout, MDA3KP15A application, or MDA3KP15A equivalent, this device is selected for high-reliability DC power rail protection where fast clamping (<100 ps response), 3000 W surge capability, and MIL-PRF-19500 upscreening options are required - especially in aerospace, industrial control, and telecom infrastructure designs.
Technical Context
The MDA3KP15A operates as a unidirectional avalanche diode-based TVS, designed to clamp transients by entering breakdown when reverse voltage exceeds V(BR) min (16.7 V). Its clamping action limits downstream voltage to ≤24.4 V at 123 A IPP under 10/1000 µs waveform, enabling robust protection of 15 V nominal systems.
It features thermally stable silicon construction with full lot traceability, 3σ screening on standby current (ID ≤ 2 µA @ VWM), and moisture sensitivity level 1 (no dry pack required). The device is surge-tested per JEDEC JESD22-A114 and rated for -55 °C to +150 °C junction temperature operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous DC or peak AC voltage the device blocks without conduction; matches 15 V system rails. |
| V(BR) min/max | 16.7–18.5 V - Breakdown initiates within this range at 1 mA test current; ensures reliable turn-on above operating voltage. |
| VC @ IPP | 24.4 V at 123 A - Clamped voltage during worst-case 10/1000 µs surge; defines maximum stress on protected ICs. |
| PPP | 3000 W - Peak pulse power handling at 10/1000 µs; enables survival of high-energy lightning-induced surges. |
| ID @ VWM | ≤2 µA - Ultra-low leakage at rated standoff; prevents measurable power loss or bias shift in sensitive circuits. |
| TJ/TSTG | -55 °C to +150 °C - Extended thermal range supports operation in harsh environments including avionics and motor drives. |
Pinout & Package
MDA3KP15A uses a 3-pin TO-277A (SMB) package with cathode-anode-cathode terminal configuration. Pin 1 (cathode) and Pin 3 (cathode) are electrically common; Pin 2 is the anode. Polarity is marked by a dot on the top surface adjacent to Pin 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Common cathode connection for unidirectional clamping from anode (Pin 2) to ground or return path. |
| Pin 2 | Anode | Main current entry point during transient events; connects to protected line (e.g., +15 V rail). |
| Pin 3 | Cathode | Electrically tied to Pin 1; enables dual-cathode layout for mechanical stability and thermal symmetry. |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse power | Supports IEC61000-4-5 Class 4 lightning immunity (42 Ω source) without degradation over 1000+ surges. |
| Clamping response <100 ps | Engages before most microcontroller I/O or power MOSFET gate oxide can be damaged by fast-rising transients. |
| MIL-PRF-19500 upscreening option | Enables qualification for space-grade or military platforms requiring wafer lot traceability and 3σ ID screening. |
| Moisture Level 1 rating | Eliminates bake-out requirement prior to reflow, reducing assembly cost and avoiding thermal stress on PCBs. |
Applications
| Industrial Power Input Protection | Telecom DC Feeds |
|---|---|
Use Scenario: 15 V DC input stage of programmable logic controller (PLC) power module exposed to relay coil flyback and nearby motor switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between +15 V rail and chassis ground. Use Value: Limits transient excursions to ≤24.4 V, preventing latch-up or overvoltage damage to upstream DC/DC controllers and downstream FPGA power domains. | Use Scenario: -48 V telecom rectifier output feeding remote radio units, subject to induced surges from antenna coupling and lightning proximity. IC Role / Device Role / Timing Role: Standoff-rated TVS on positive rail of split-rail distribution network (e.g., +15 V bias for RF amplifiers). Use Value: Maintains system uptime by absorbing 3000 W surges without failure, meeting GR-1089-CORE Zone 3 requirements for central office equipment. |
| Aerospace Avionics Buses | Renewable Energy Control Systems |
Use Scenario: 15 V auxiliary bus in flight control computer receiving power from isolated DC/DC converters with minimal filtering. IC Role / Device Role / Timing Role: Primary overvoltage protector on critical sensor interface supply rail. Use Value: Provides MIL-STD-461G CS117 compliant transient suppression with verified -55 °C to +125 °C operational margin and lot-traceable reliability data. | Use Scenario: 15 V control rail in solar inverter supervisory MCU board, subjected to grid-switching transients and PV string arcing events. IC Role / Device Role / Timing Role: Fast-response clamping device across input capacitor on isolated 15 V LDO regulator. Use Value: Prevents brownout resets and flash corruption by limiting voltage overshoot to <25 V during 10/1000 µs surges up to 123 A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Lower PPP (400 W), same VWM (15 V), higher VC (24.4 V → 27.7 V), SMB package. | Not suitable for IEC61000-4-5 Class 4; limited to low-energy ESD/EFT and switching noise. | Select SMAJ15A only for cost-sensitive consumer-grade designs with <500 W surge exposure. |
| SMCJ15A | Higher PPP (1500 W), same VWM (15 V), identical VC (24.4 V), larger SMC package. | Meets IEC61000-4-5 Class 2 (42 Ω), but insufficient for Class 4; requires more PCB area. | Choose SMCJ15A when 1500 W surge margin suffices and board space allows SMC footprint. |
Compared with SMAJ15A and SMCJ15A, the MDA3KP15A delivers triple the surge energy handling (3000 W) in the same SMB outline, enabling single-device compliance with stringent Class 4 lightning standards without layout redesign or derating penalties.
Availability
MDA3KP15A is available at Aetrix Electronics and suitable for industrial power input protection, telecom DC feeds, aerospace avionics buses, and renewable energy control systems requiring stable component supply and long-term lifecycle assurance.
Supply support for MDA3KP15A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microsemi Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The MDA series was developed specifically for mission-critical transient suppression in environments demanding MIL-PRF-19500 conformance, extended temperature operation, and validated 3000 W surge endurance - targeting avionics, ground radar, and hardened communications infrastructure.
FAQ
What is the polarity configuration of the MDA3KP15A?
The MDA3KP15A is a unidirectional TVS diode array with cathode-anode-cathode pinout (Pins 1 and 3 = cathode, Pin 2 = anode). This configuration allows it to clamp only negative-going transients on the anode line relative to ground, making it ideal for protecting positive DC rails like +15 V supplies. Its polarity marking is indicated by a dot on the package adjacent to Pin 1, and it must be oriented correctly in-circuit to avoid forward conduction during normal operation.
Does the MDA3KP15A meet IEC61000-4-5 Class 4 lightning surge requirements?
Yes, the MDA3KP15A meets IEC61000-4-5 Class 4 for secondary lightning protection when tested with a 42 Ω source impedance, delivering full 3000 W clamping performance at 123 A IPP under 10/1000 µs waveform. Its 24.4 V clamping voltage at that current ensures protected circuitry remains within safe operating limits. Compliance is verified per the manufacturer's published test data in RF01243 Rev B, and no derating is required for Class 4 at 25 °C ambient.
What is the maximum junction temperature rating for the MDA3KP15A?
The MDA3KP15A has a specified junction and storage temperature range of -55 °C to +150 °C. This wide rating supports deployment in extreme environments such as engine control units, downhole oilfield tools, and satellite power conditioning modules. Derating of peak pulse power begins above 25 °C per Figure 3 in the datasheet, with 50% power capability retained at +100 °C ambient when mounted on a standard FR-4 PCB with recommended pad layout.
Can the MDA3KP15A be used in bidirectional configurations?
No - the MDA3KP15A is strictly unidirectional. Bidirectional variants in the same family carry a "C" suffix (e.g., MDA3KP15CA). Using the MDA3KP15A for AC or bipolar signal line protection would result in forward conduction during negative half-cycles, potentially causing failure or unintended current paths. For bidirectional 15 V protection, MDA3KP15CA must be selected instead, with matching clamping and surge ratings.
Is RoHS compliance confirmed for the MDA3KP15A?
Yes, the MDA3KP15A is RoHS compliant, indicated by the "e3" suffix in its full marking per the part nomenclature on page 2 of RF01243 Rev B. The device uses annealed matte-tin plating on terminals and void-free UL94V-0 epoxy encapsulation, satisfying EU Directive 2011/65/EU Annex II substance restrictions. No lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE is present above threshold limits, and full compliance documentation is available upon request from Aetrix Electronics.
MDA3KP15A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 16-SMD, Gull Wing
- Series:
- MDA
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 8
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 123A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
MDA3KP15A FAQ
1.How can I place an order for MDA3KP15A through Aetrix?
Please submit a Request for Quotation (RFQ) for MDA3KP15A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MDA3KP15A reliable?
The price and inventory of MDA3KP15A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MDA3KP15A is usually 5 days.
3.What payment methods are accepted for MDA3KP15A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MDA3KP15A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MDA3KP15A?
MDA3KP15A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MDA3KP15A order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MDA3KP15A?
For technical support, including MDA3KP15A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MDA3KP15A requirements.
6.How does Aetrix verify that MDA3KP15A is sourced from the original manufacturer or authorized distributors?
All MDA3KP15A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MDA3KP15A meets industry standards.
7.What is the process for return or replacement of MDA3KP15A?
All MDA3KP15A units undergo pre-shipment inspection (PSI). If there is an issue with MDA3KP15A, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MDA3KP15A part is unused and in its original packaging.
Return procedure for MDA3KP15A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MDA3KP15A Tags
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